A.1. General Advice

If you can't get checksetup.pl to run to
completion, it normally explains what's wrong and how to fix it.
If you can't work it out, or if it's being uncommunicative, post
the errors in the
mozilla.support.bugzilla
newsgroup.

If you have made it all the way through
Section 2.1, “Installation” (Installation) and
Section 2.2, “Configuration” (Configuration) but accessing the Bugzilla
URL doesn't work, the first thing to do is to check your web server error
log. For Apache, this is often located at
/etc/logs/httpd/error_log. The error messages
you see may be self-explanatory enough to enable you to diagnose and
fix the problem. If not, see below for some commonly-encountered
errors. If that doesn't help, post the errors to the newsgroup.

Bugzilla can also log all user-based errors (and many code-based errors)
that occur, without polluting the web server's error log. To enable
Bugzilla error logging, create a file that Bugzilla can write to, named
errorlog, in the Bugzilla data
directory. Errors will be logged as they occur, and will include the type
of the error, the IP address and username (if available) of the user who
triggered the error, and the values of all environment variables; if a
form was being submitted, the data in the form will also be included.
To disable error logging, delete or rename the
errorlog file.